( ! ) Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /var/www/YOURLS/includes/functions.php on line 1209
Call Stack
#	Time	Memory	Function	Location
1	0.0002	415704	{main}( )	.../yourls-loader.php:0
2	0.0503	489696	yourls_get_protocol( $url = NULL )	.../yourls-loader.php:34
3	0.0503	489728	preg_match( $pattern = '!^[a-zA-Z][a-zA-Z0-9+.-]+:(//)?!', $subject = NULL, $matches = NULL )	.../functions.php:1209

( ! ) Deprecated: trim(): Passing null to parameter #1 ($string) of type string is deprecated in /var/www/YOURLS/includes/functions-formatting.php on line 557
Call Stack
#	Time	Memory	Function	Location
1	0.0002	415704	{main}( )	.../yourls-loader.php:0
2	0.0506	489920	yourls_keyword_is_taken( $keyword = NULL, $use_cache = ??? )	.../yourls-loader.php:46
3	0.0506	489920	yourls_get_keyword_infos( $keyword = NULL, $use_cache = TRUE )	.../functions-shorturls.php:486
4	0.0506	489920	yourls_sanitize_keyword( $keyword = NULL, $restrict_to_shorturl_charset = ??? )	.../functions-shorturls.php:507
5	0.0506	489920	yourls_sanitize_url( $unsafe_url = NULL, $protocols = ??? )	.../functions-formatting.php:86
6	0.0506	489920	yourls_esc_url( $url = NULL, $context = 'redirection', $protocols = [] )	.../functions-formatting.php:123
7	0.0506	489920	trim( $string = NULL )	.../functions-formatting.php:557

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